I know that Neela won't force Avni in a loveless marriage. If Neil is not involved, then there has to be something that's going to happen which convinces her that Avni & Neil will fall in love for sure & that's why she asks Avni to take Rhea's place. Neela's character has been one of the characters which maintained consistency. & I would like to think that will be the case in future episodes as well.
One thing about Neil's character is that, it's unstable. There are just too many dynamics in his character which makes him inconsistent with his own actions & words. Yes, if he is going to think just as Neil, he won't ask for bride swap. But if he is going to be in cop mode, he may demand for it. Just to make sure that Avni do not escape her punishment this time, if found guilty. & of course it will solve his problem of DM stealing his father's money.
& Rhea is already not ready to marry him, & even he is not ready to move on from his dead gf, so it will actually solve his problem. At least that's what he will think, little does he know it's going to be exactly opposite & he will fall in love with Avni head over heels.
So right now there are lots of possibilities, & whatever may happen Avneil will be together. & that's what I am waiting for.